.app{width:100%;height:90vh;display:flex;justify-content:center;align-items:center}.chat-container{width:100%;max-width:800px;height:100%;background:#fff;border-radius:20px;box-shadow:0 20px 60px #0000004d;display:flex;flex-direction:column;overflow:hidden}.chat-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:20px 30px;display:flex;justify-content:space-between;align-items:center}.header-left{display:flex;align-items:center;gap:15px}.chat-header h1{font-size:24px;font-weight:700}.stage-badge{background:#ffffff4d;padding:5px 12px;border-radius:20px;font-size:14px;font-weight:500}.new-chat-btn{background:#fff3;color:#fff;padding:10px 20px;border-radius:10px;font-weight:500;transition:all .3s}.new-chat-btn:hover{background:#ffffff4d}.symptoms-bar{background:#f8f9fa;padding:12px 30px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;border-bottom:1px solid #e9ecef}.symptoms-label{font-weight:600;color:#495057}.symptom-tag{background:#667eea;color:#fff;padding:5px 12px;border-radius:15px;font-size:13px;font-weight:500}.messages-container{flex:1;overflow-y:auto;padding:30px;background:#fafafa}.welcome-message{text-align:center;padding:60px 20px}.welcome-message h2{font-size:28px;color:#333;margin-bottom:10px}.welcome-message p{font-size:18px;color:#666;margin-bottom:30px}.suggestions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.suggestions button{background:#f8f9fa;color:#495057;padding:12px 24px;border-radius:25px;font-size:15px;transition:all .3s;border:2px solid #e9ecef}.suggestions button:hover{background:#667eea;color:#fff;border-color:#667eea}.message{margin-bottom:20px;display:flex}.message.user{justify-content:flex-end}.message.assistant{justify-content:flex-start}.message-content{max-width:70%;padding:15px 20px;border-radius:20px;font-size:16px;line-height:1.6;position:relative}.message.user .message-content{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-bottom-right-radius:5px}.message.assistant .message-content{background:#fff;color:#333;border-bottom-left-radius:5px;box-shadow:0 2px 10px #0000001a}.message-stage{display:inline-block;margin-left:10px;padding:3px 8px;background:#0000001a;border-radius:10px;font-size:12px;font-weight:500}.message.assistant .message-stage{background:#f0f0f0;color:#667eea}.loading{background:#fff!important;padding:20px!important}.typing-indicator{display:flex;gap:5px;align-items:center}.typing-indicator span{width:8px;height:8px;background:#667eea;border-radius:50%;animation:bounce 1.4s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-10px)}}.input-container{background:#fff;padding:20px 30px;border-top:1px solid #e9ecef;display:flex;gap:15px;align-items:flex-end}.input-container textarea{flex:1;padding:12px 15px;border:2px solid #e9ecef;border-radius:15px;font-size:16px;resize:none;transition:all .3s}.input-container textarea:focus{border-color:#667eea}.send-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:12px 30px;border-radius:15px;font-size:16px;font-weight:600;transition:all .3s;min-width:100px}.send-btn:disabled{opacity:.5;cursor:not-allowed}.send-btn:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 5px 15px #667eea66}@media (max-width: 768px){.chat-container{border-radius:0;height:100vh}.chat-header{padding:15px 20px}.chat-header h1{font-size:20px}.messages-container{padding:20px 15px}.message-content{max-width:85%;font-size:15px}.input-container{padding:15px 20px}.welcome-message{padding:40px 15px}.suggestions{flex-direction:column}.suggestions button{width:100%}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans KR,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px}#root{width:100%;max-width:800px}button{cursor:pointer;border:none;outline:none;font-family:inherit}input,textarea{font-family:inherit;outline:none}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#f1f1f1;border-radius:10px}::-webkit-scrollbar-thumb{background:#888;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#555}